Question

A body of mass 4 kg accelerates from 10 m/s to 20 m/s. How much work is done on the body?​

Answer 1

Answer:

work= 1/2×m×v²1 - 1/2×m×v²2

work=m(v²1-v²2)/2

work=4(10²-20²)/2

work=4(100-400)/2

work=4(300)2

work=1200/2

work=600